Description
The Xylem-Hoffman Specialty Series B1 Cast Iron Inverted Bucket Steam Trap (Model B1125S-3, SKU 404337) is a reliable, time-tested solution for efficient condensate removal in steam distribution and process systems. Engineered for durability and consistent performance, this trap is ideal for low- to medium-pressure steam applications in commercial and industrial HVAC, process heating, and steam distribution systems.
How It Works
The inverted bucket steam trap operates on the principle of buoyancy. When steam enters the trap body, the inverted bucket floats and closes the discharge valve, preventing steam loss. As condensate accumulates, the bucket loses buoyancy, sinks, and opens the valve to discharge condensate and non-condensable gases — then resets automatically. The built-in strainer protects internal components from pipe scale and debris, reducing maintenance needs and extending service life.
Key Features
- Series B1 cast iron body construction for long-lasting durability
- 3/4″ NPT connections for straightforward installation into standard piping
- 125 PSI maximum operating pressure rating
- .125″ orifice for precise condensate discharge control
- Built-in strainer eliminates the need for a separate inline strainer
- Automatic air venting capability for reliable system startup
- Inverted bucket mechanism provides continuous, reliable condensate removal
- Compact, rugged design suited for commercial and industrial steam systems
Specifications
- SKU: 404337
- Model: B1125S-3
- Series: B1
- Connection Size: 3/4″ NPT
- Maximum Operating Pressure: 125 PSI
- Orifice Size: .125″
- Body Material: Cast Iron
- Trap Type: Inverted Bucket
- Strainer: Built-in
Applications
- Commercial and industrial steam heating systems
- Steam distribution mains and branch lines
- Process heating equipment
- Unit heaters and heat exchangers
- Drip legs and steam tracing applications
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